{"icao":"KSTJ","name":"Rosecrans Memorial Airport","lat":39.7719,"lon":-94.9097,"country":"US","tz":"America/Chicago","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":101,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["December","September"],"monthlyHours":[10,5,4,3,2,3,10,10,14,13,11,17],"medianEventHours":2,"season":{"summary":"Fog season runs July through February, peaking in December; fog is mostly a 2 AM\u20137 AM phenomenon; typically thinning out by 9 AM; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","July","August","September","October","November","December"],"timeOfDay":"2 AM\u20137 AM","typicallyClearsBy":"9 AM"}},"forecast":{"covered":true,"public":true,"cycle":"2026-09-04T13:00:00Z","peakPct":2,"peakAtLocal":"2026-09-05T06:00:00-05:00","wording":"No, fog is unlikely in the next 36 hours \u2014 the calibrated forecast peaks at just 2%. September typically brings about 14 hours of dense fog here."},"links":{"page":"https://fogatlas.org/fog/kstj/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KSTJ","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KSTJ.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}